长跨中间轴双悬臂转子轴流式引风机振动分析及治理  

Vibration Analysis and Treatment on Axial-flow Induced Fans with Longspan Intermediate Shaft and Double-cantilever-rotors

作　　者：李卫军 何玉灵[3] 马思聪 蔡文方 LI Weijun;HE Yuling;MA Sicong;CAI Wenfang(State Grid Zhejiang Electric Power Research Institute,Hangzhou 310014,China;Hangzhou Yineng Electric Technology Co.,Ltd.,Hangzhou 310014,China;Hebei Key Laboratory of Electric Machinery Health Maintenance and Failure Prevention,North China Electric Power University,Baoding 071003,China)

机构地区：[1]国网浙江省电力有限公司电力科学研究院,浙江杭州310014 [2]杭州意能电力技术有限公司,浙江杭州310014 [3]河北省电力机械装备健康维护与失效预防重点实验室(华北电力大学),河北保定071003

出　　处：《电力科学与工程》2022年第7期50-57,共8页Electric Power Science and Engineering

基　　金：国家自然科学基金(51777074);国网浙江省电力有限公司科技项目(5211DS21003);杭州意能电力技术有限公司科技项目(EPRD2020-06);河北省青年拔尖人才资助计划([2018]-27)。

摘　　要：考察某型双级轴流式动叶可调引风机的振动故障特征,分析了其轴系支撑特点及动力学特征,对不同类型不平衡下的轴承增量力进行了分析,提出了该类风机现场双平面动平衡减振方法,拓展了转子振动治理策略,编制了振动故障综合治理流程图。将该方法应用于660 MW机组单列引风机的振动治理中,实现了风机的精细化现场动平衡,显著降低了风机的振动。According to the vibration fault characteristics of the two-stage axial adjustable induced draft fan with movable blades,the shafting support and dynamic characteristics are analyzed,and the bearing incremental force under different types of imbalance is analyzed.Thus,the vibration reduction method of on-site biplane dynamic balance of this kind of fan is proposed,the rotor vibration treatment strategy is expanded,and the flow chart of comprehensive treatment for vibration fault is compiled.The above method is applied to the vibration treatment of a single row induced draft fan of a 660 MW unit,which achieves accurate dynamic balance and significantly reduces the vibration.

关 键 词：燃煤发电机组 轴流式引风机 动平衡 振动抑制 

分 类 号：TK14[动力工程及工程热物理—热能工程] TH443[机械工程—机械制造及自动化]